Example
For example, if you have a group called myMenuGroup with menu items myUsersItem, myAdminItem, and myUserMgrItem, the entire section might look like this:
<?xml version="1.0" encoding="UTF-8"?>
<navigationmenu
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="menu.xsd">
<menu type="group" render="true" tag="myMenuGroup">
<item type="item" render="true" tag="myUsersItem"
action="http://my.site.com/custom/users.page.html" newWindow="true">
</item>
<item type="item" render="true" tag="myAdminItem"
action="http://my.site.com/custom/admin.page.html" newWindow="true">
</item>
<item type="item" render="true" tag="myUserMgrItem"
action="http://my.site.com/custom/usermgr.page.html" newWindow="true">
</item>
</menu>
</navigationmenu>